EP0693449B1 - Sheet brake in the delivery device of a printing machine - Google Patents

Sheet brake in the delivery device of a printing machine Download PDF

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Publication number
EP0693449B1
EP0693449B1 EP95109171A EP95109171A EP0693449B1 EP 0693449 B1 EP0693449 B1 EP 0693449B1 EP 95109171 A EP95109171 A EP 95109171A EP 95109171 A EP95109171 A EP 95109171A EP 0693449 B1 EP0693449 B1 EP 0693449B1
Authority
EP
European Patent Office
Prior art keywords
suction
sheet
sheet brake
suction ring
base body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95109171A
Other languages
German (de)
French (fr)
Other versions
EP0693449A2 (en
EP0693449A3 (en
Inventor
Hanns-Otto Haas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0693449A2 publication Critical patent/EP0693449A2/en
Publication of EP0693449A3 publication Critical patent/EP0693449A3/en
Application granted granted Critical
Publication of EP0693449B1 publication Critical patent/EP0693449B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/686—Pneumatic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/324—Removability or inter-changeability of machine parts, e.g. for maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a sheet brake in the boom of a printing press according to the preamble of the main claim.
  • a bow brake of this type is known from DE 2 811 963 C2.
  • the sheet brake is designed as a suction roll with built-in suction chambers and integrated suction air supply.
  • the suction rolls are driven by separate drive wheels.
  • a separate suction body with suction air supply can be plugged onto the suction rolls, which is supported on a crossbar.
  • the complete suction rolls are interchangeable depending on the operating mode (fine or reverse printing) with a narrow or wide version.
  • suction roller has recesses running radially to the side of the peripheral surface and an air outlet opening arranged in the upper segment area of the suction roller.
  • a disadvantage of the above-mentioned solutions is that a complete change of the suction roller is necessary when changing from perfecting to reverse printing, when changing to another printing material or when worn. This requires downtimes and requires more effort.
  • a further bow brake which has suction bodies axially adjustable on a carrier shaft.
  • the suction body has suction nozzles on the circumference, which are used for a short time Suction air can be acted upon.
  • the carrier shaft has a longitudinally arranged control slot for the suction air and arranged thereon a concentrically rotatable, axially immovable perforated suction body tube.
  • Radially pluggable suction body segments are arranged concentrically on the suction body tube and bellows surrounding the suction tube in the axial direction are arranged between the suction body segments.
  • the object of the invention is to develop a solution that allows a quick change of the sheet brake and ensures a sufficient braking effect with all substrates and operating modes.
  • suction ring element allows the suction ring element to be changed quickly without completely changing the suction roller.
  • suction ring elements of different widths can be placed concentrically on a roller base. In the event of wear, it is only necessary to replace the suction ring element.
  • the delivery stack of a sheet delivery is preceded by a drive shaft 1 mounted in the side frame walls in the conveying direction 14 of a chain system 13.
  • a traverse 2 is arranged parallel to the drive shaft 1 transversely to the conveying direction 14 and is likewise fixed in the side frame walls.
  • a sheet brake essentially consists of a suction roll base body 6 which is positively fixed on the drive shaft 1 and which is accommodated in a housing 3, the housing 3 being detachably connected to the cross member 2. In the present example, this is carried out by a clamp connection 8.
  • the housing 3 extends laterally around the suction roll base body 6 through two side walls 7. With a corresponding design of the suction roll base body 6, the housing 3 can also have only one side wall 7.
  • a suction channel 5 runs around each side wall 7, which is guided laterally to the suction roll base body 6 and is coupled in the housing 3 to a suction air line 4.
  • the suction roll base body 6 has radial lateral openings 11 which are coupled to openings 10 emerging on the circumference.
  • a suction ring element 9 is arranged concentrically with the suction roller base body 6.
  • the suction ring element 9 has through bores 12 emerging radially on the circumference, which are approximately coincidentally fixed with the openings 10 of the suction roll base body 6. This is achieved, for example, by a positive connection, through which the through bores 12 are positioned to the openings 10.
  • the suction ring element 9 consists of at least two parts 9.1; 9.2. Both parts 9.1; 9.2 are detachably connected.
  • a simple connection can be achieved by an approximately U-shaped clip as a connecting element 16, which in axial bores of the suction ring element 9 or in its parts 9.1; 9.2 this intervenes.
  • Other preferred connection options are e.g. a swivel and a releasable snap connection or two releasable snap connections. When using a multi-part suction ring element 9, the number of connection points increases accordingly.
  • a suction ring element 9 with a wider sheet support surface 17 is used (FIG. 4).
  • a suction ring element 9 with a narrower arch supporting surface 17 is used for sheets 15 produced in reverse or face and reverse printing, which slopes away conically on the side surfaces of the suction ring element 9.
  • the wider suction ring element 9 according to FIG. 4 can also be used if there is sufficient space.
  • the two-part or multi-part design of the suction ring element 9 enables a quick change by the operator with little effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Advancing Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Braking Arrangements (AREA)
  • Discharge By Other Means (AREA)
  • Labeling Devices (AREA)

Abstract

The suction roller provides a controlled braking effect on the sheets (15) dragged through the printer. The roller has a base structure (6) linked to the suction ducts (4,5) and has a removable cover (9). The cover has a pattern of suction slots and a controlled surface area to match the print quality and the paper quality being used. The flexible covers are secured by clip fasteners. For narrow contact areas with the paper a tapering contour cover is used. The base suction roller also has side slots to ensure an even suction flow. Several suction rollers are spaced across the sheet feed. <IMAGE>

Description

Die Erfindung betrifft eine Bogenbremse im Ausleger einer Druckmaschine gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a sheet brake in the boom of a printing press according to the preamble of the main claim.

Eine Bogenbremse dieser Art ist aus der DE 2 811 963 C2 bekannt. Gemäß dieser Schrift ist die Bogenbremse als Saugwalze mit eingearbeiteten Saugkammern und integrierter Saugluftzuführung ausgeführt. Die Saugwalzen werden über separate Antriebsräder angetrieben. In einer weiteren Ausfuhrung ist auf die Saugwalzen jeweils ein separater Saugkörper mit Saugluftzuführung aufsteckbar, der auf einer Traverse abgestützt ist. Die kompletten Saugwalzen sind je nach Betriebsart (Schön- oder Widerdruck) mit schmaler oder breiter Ausführung austauschbar.A bow brake of this type is known from DE 2 811 963 C2. According to this document, the sheet brake is designed as a suction roll with built-in suction chambers and integrated suction air supply. The suction rolls are driven by separate drive wheels. In a further embodiment, a separate suction body with suction air supply can be plugged onto the suction rolls, which is supported on a crossbar. The complete suction rolls are interchangeable depending on the operating mode (fine or reverse printing) with a narrow or wide version.

Eine weitere, insbesondere für Schön- und Widerdruck geeignete Bogenbremse als Saugwalze ist aus der DE 3 437 584 A1 bekannt, die dem Oberbegriff des Anspruchs 1 entspricht. Die Saugwalze besitzt seitlich zur Umfangsfläche radial verlaufende Ausnehmungen sowie eine im oberen Segmentbereich der Saugwalze angeordnete Luftaustrittsöffnungen.Another sheet brake, particularly suitable for perfecting and reverse printing, as a suction roll is known from DE 3 437 584 A1, which corresponds to the preamble of claim 1. The suction roller has recesses running radially to the side of the peripheral surface and an air outlet opening arranged in the upper segment area of the suction roller.

Nachteilig bei oben genannten Lösungen ist es, daß bei Umstellung von Schön- auf Widerdruck, bei Umstellung auf einen anderen Bedruckstoff oder bei Verschleiß ein kompletter Wechsel der Saugwalze erforderlich ist. Dies bedingt Stillstandszeiten und bedarf eines größeren Aufwandes.A disadvantage of the above-mentioned solutions is that a complete change of the suction roller is necessary when changing from perfecting to reverse printing, when changing to another printing material or when worn. This requires downtimes and requires more effort.

Aus der DE 4 221 927 A1 ist eine weitere Bogenbremse bekannt, die auf einer Trägerwelle axial verstellbare Saugkörper aufweist. Der Saugkörper besitzt umfangsseitig Saugdüsen, die kurzzeitig mit Saugluft beaufschlagbar sind. Die Trägerwelle besitzt einen längs angeordneten Steuerschlitz für die Saugluft und darauf angeordnet ein konzentrisch drehbares, axial unverschiebbares perforiertes Saugkörperrohr. Auf dem Saugkörperrohr sind radial zusammensteckbare Saugkörpersegmente konzentrisch angeordnet und zwischen den Saugkörpersegmenten sind das Saugrohr in axialer Richtung umschließende Faltenbälge angeordnet.From DE 4 221 927 A1 a further bow brake is known which has suction bodies axially adjustable on a carrier shaft. The suction body has suction nozzles on the circumference, which are used for a short time Suction air can be acted upon. The carrier shaft has a longitudinally arranged control slot for the suction air and arranged thereon a concentrically rotatable, axially immovable perforated suction body tube. Radially pluggable suction body segments are arranged concentrically on the suction body tube and bellows surrounding the suction tube in the axial direction are arranged between the suction body segments.

Nachteilig ist dabei, daß diese Lösung durch die Teilvielfalt relativ aufwendig ist. Die umlaufenden Faltenbälge müssen luftdicht sein, da sonst ein Leistungsabfall der Saugluft zu verzeichnen ist.The disadvantage here is that this solution is relatively complex due to the partial diversity. The surrounding bellows must be airtight, otherwise there will be a decrease in the suction air performance.

Aufgabe der Erfindung ist es, eine Lösung zu entwickeln, die einen schnellen Wechsel der Bogenbremse gestattet und eine ausreichende Bremswirkung bei allen Bedruckstoffen und Betriebsarten gewährleistet.The object of the invention is to develop a solution that allows a quick change of the sheet brake and ensures a sufficient braking effect with all substrates and operating modes.

Gelöst wird dies durch den kennzeichnenden Teil des Hauptanspruches. Eine Weiterbildung ergibt sich aus dem Unteranspruch.This is solved by the characterizing part of the main claim. Further training results from the subclaim.

Die erfindungsgemäße Lösung gestattet einen schnellen Wechsel des Saugringelementes, ohne die Saugwalze komplett zu wechseln. Je nach Betriebsatt und nach Sujet (Schön- oder Widerdruck) oder Bedruckstoff (Papier oder Karton) oder auch bei kratzempfindlichen Bedruckstoffen können verschieden breite Saugringelemente auf einem Walzengrundkörper konzentrisch aufgesteckt werden. Bei Verschleiß ist lediglich ein Austausch des Saugringelementes erforderlich.The solution according to the invention allows the suction ring element to be changed quickly without completely changing the suction roller. Depending on the company and subject (fine or reverse printing) or substrate (paper or cardboard) or even scratch-sensitive substrates, suction ring elements of different widths can be placed concentrically on a roller base. In the event of wear, it is only necessary to replace the suction ring element.

Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Dabei zeigen:

Fig. 1
eine Seitenansicht einer Bogenbremse,
Fig. 2
eine Draufsicht der Fig. 1,
Fig. 3
ein Saugringelement, zweiteilig ausgebildet,
Fig. 4
eine Vorderansicht eines breiten Saugringelementes,
Fig. 5
eine Vorderansicht eines schmalen Saugringelementes.
The invention will be explained in more detail using an exemplary embodiment. Show:
Fig. 1
a side view of a bow brake,
Fig. 2
2 shows a top view of FIG. 1,
Fig. 3
a suction ring element, formed in two parts,
Fig. 4
a front view of a wide suction ring element,
Fig. 5
a front view of a narrow suction ring element.

Gemäß Fig. 1 ist dem Auslagestapel eines Bogenauslegers eine in den Seitengestellwänden gelagerte Antriebswelle 1 in Förderrichtung 14 eines Kettensystems 13 vorgeordnet. Parallel zur Antriebswelle 1 ist quer zur Förderrichtung 14 eine Traverse 2 angeordnet, die ebenfalls in den Seitengestellwänden fixiert ist. Auf der Antriebswelle 1 und der Traverse 2 sind axial verschiebbar mehrere Bogenbremsen angeordnet, welche zum Abbremsen und Straffen eines Bogens 15 dienen.1, the delivery stack of a sheet delivery is preceded by a drive shaft 1 mounted in the side frame walls in the conveying direction 14 of a chain system 13. A traverse 2 is arranged parallel to the drive shaft 1 transversely to the conveying direction 14 and is likewise fixed in the side frame walls. On the drive shaft 1 and the cross member 2, several sheet brakes are arranged axially displaceably, which serve to brake and tighten a sheet 15.

Eine Bogenbremse besteht im wesentlichen aus einem auf der Antriebswelle 1 formschlüssig fixierten Saugwalzengrundkörper 6, der in einem Gehäuse 3 aufgenommen ist, wobei das Gehäuse 3 mit der Traverse 2 lösbar verbunden ist. Im vorliegenden Beispiel ist dies durch eine Klemmverbindung 8 ausgeführt. Das Gehäuse 3 erstreckt sich seitlich um den Saugwalzengrundkörper 6 durch zwei Seitenwände 7. Bei entsprechender Ausbildung des Saugwalzengrundkörpers 6 kann das Gehäuse 3 auch nur eine Seitenwand 7 aufweisen. Um jede Seitenwand 7 verläuft ein Saugkanal 5, der seitlich an den Saugwalzengrundkörper 6 geführt ist und im Gehäuse 3 mit einer Saugluftleitung 4 gekoppelt ist. Der Saugwalzengrundkörper 6 besitzt radial verlaufende seitliche Öffnungen 11, die mit am Umfang austretenden Öffnungen 10 gekoppelt sind.A sheet brake essentially consists of a suction roll base body 6 which is positively fixed on the drive shaft 1 and which is accommodated in a housing 3, the housing 3 being detachably connected to the cross member 2. In the present example, this is carried out by a clamp connection 8. The housing 3 extends laterally around the suction roll base body 6 through two side walls 7. With a corresponding design of the suction roll base body 6, the housing 3 can also have only one side wall 7. A suction channel 5 runs around each side wall 7, which is guided laterally to the suction roll base body 6 and is coupled in the housing 3 to a suction air line 4. The suction roll base body 6 has radial lateral openings 11 which are coupled to openings 10 emerging on the circumference.

Konzentrisch zum Saugwalzengrundkörper 6 ist ein Saugringelement 9 angeordnet. Das Saugringelement 9 besitzt radial am Umfang austretende Durchgangsbohrungen 12, die mit den Öffnungen 10 des Saugwalzengrundkörpers 6 annährend deckungsgleich lagefixiert sind. Dies wird beispielsweise durch eine formschlüssige Verbindung erreicht, durch die die Durchgangsbohrungen 12 zu den Öffnungen 10 positioniert werden. Das Saugringelement 9 besteht mindestens aus zwei Teilen 9.1; 9,2. Beide Teile 9.1; 9,2 sind lösbar verbunden. Eine einfache Verbindung läßt sich erreicht durch eine etwa U-förmige Spange als Verbindungselement 16, die in axialen Bohrungen des Saugringelementes 9 bzw. in dessen Teile 9.1; 9.2 diese verbindend eingreift. Weitere bevorzugte Verbindungsmöglichkeiten sind z.B. ein Drehgelenk und eine lösbare Schnappverbindung oder zwei lösbare Schnappverbindungen. Bei Verwendung eines mehrteiligen Saugringelementes 9 erhöht sich entsprechend auch die Anzahl der Verbindungsstellen.A suction ring element 9 is arranged concentrically with the suction roller base body 6. The suction ring element 9 has through bores 12 emerging radially on the circumference, which are approximately coincidentally fixed with the openings 10 of the suction roll base body 6. This is achieved, for example, by a positive connection, through which the through bores 12 are positioned to the openings 10. The suction ring element 9 consists of at least two parts 9.1; 9.2. Both parts 9.1; 9.2 are detachably connected. A simple connection can be achieved by an approximately U-shaped clip as a connecting element 16, which in axial bores of the suction ring element 9 or in its parts 9.1; 9.2 this intervenes. Other preferred connection options are e.g. a swivel and a releasable snap connection or two releasable snap connections. When using a multi-part suction ring element 9, the number of connection points increases accordingly.

Für im Schöndruck hergestellte Bogen 15 wird ein Saugringelement 9 mit breiterer Bogentragfläche 17 verwendet (Fig. 4). Für in Widerdruck oder Schön- und Widerdruck hergestellte Bogen 15 wird ein Saugringelement 9 mit schmalerer Bogentragfläche 17 verwendet, die konisch an den Seitenflächen des Saugringelementes 9 abfällt. Je nach Sujet kann bei entsprechendem Platz auch das breitere Saugringelement 9 gemäß Fig. 4 Verwendung finden. Durch die zwei- oder mehrteilige Ausbildung des Saugringelementes 9 ist mit geringem Aufwand ein schneller Wechsel durch den Bediener möglich.For sheets 15 produced by straight printing, a suction ring element 9 with a wider sheet support surface 17 is used (FIG. 4). A suction ring element 9 with a narrower arch supporting surface 17 is used for sheets 15 produced in reverse or face and reverse printing, which slopes away conically on the side surfaces of the suction ring element 9. Depending on the subject, the wider suction ring element 9 according to FIG. 4 can also be used if there is sufficient space. The two-part or multi-part design of the suction ring element 9 enables a quick change by the operator with little effort.

BezugszeichenaufstellungList of reference symbols

11
Antriebswelledrive shaft
22nd
Traversetraverse
33rd
Gehäusecasing
44th
SaugluftleitungSuction air line
55
SaugkanalSuction channel
66
SaugwalzengrundkörperSuction roll base
77
SeitenwandSide wall
88th
KlemmverbindungClamp connection
99
SaugringelementSuction ring element
9.19.1
Teil von 9Part of 9
9.29.2
Teil von 9Part of 9
1010th
Öffnungenopenings
1111
Öffnungenopenings
1212th
DurchgangsbohrungenThrough holes
1313
KettensystemChain system
1414
FörderrichtungDirection of conveyance
1515
Bogenbow
1616
VerbindungselementFastener
1717th
BogentragflächeArch wing

Claims (5)

  1. Sheet brake in the delivery of a printing press with a suction roller base body (6) having arranged on a drive shaft on its end face and around its periphery openings and a housing having a suction channel which is linked to a suction lead, wherein prior to the delivery pile transverse to the feed direction, the drive shaft receiving several sheet brakes is arranged, characterised in that on the suction roller base body (6) linked on its end face with the suction lead (4) is arranged concentrically a multi-part suction ring element (9) in fixed position, against which through bores (12) arranged radially at the periphery are linked substantially in register with openings (11) arranged at the periphery of the suction roller base body (6).
  2. Sheet brake according to Claim 1, characterised in that the parts (9.1, 9.2) of the suction ring element (9) are releasably connected by means of connection elements (16).
  3. Sheet brake according to Claim 1, characterised in that the suction ring elements (9) have a broad sheet support surface (17) for sheets (15) printed by recto printing.
  4. Sheet brake according to Claim 1, characterised in that the suction ring elements (9) have a narrow sheet support surface (17) for sheets (15) printed in verso printing or recto and verso.
  5. Sheet brake according to Claim 4, characterised in that the sheet support surface (17) falls away conically at the side surfaces of the suction ring elements (9).
EP95109171A 1994-07-22 1995-06-14 Sheet brake in the delivery device of a printing machine Expired - Lifetime EP0693449B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4426036 1994-07-22
DE4426036 1994-07-22

Publications (3)

Publication Number Publication Date
EP0693449A2 EP0693449A2 (en) 1996-01-24
EP0693449A3 EP0693449A3 (en) 1997-01-15
EP0693449B1 true EP0693449B1 (en) 1997-09-24

Family

ID=6523914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109171A Expired - Lifetime EP0693449B1 (en) 1994-07-22 1995-06-14 Sheet brake in the delivery device of a printing machine

Country Status (3)

Country Link
EP (1) EP0693449B1 (en)
AT (1) ATE158559T1 (en)
DE (1) DE59500707D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987108B1 (en) * 1998-09-16 2004-03-03 Komori Corporation Suction unit in sheet-fed rotary printing press
DE10109381A1 (en) * 2001-02-27 2002-09-05 Koenig & Bauer Ag Suction ring for suction rolls

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811963C2 (en) 1978-03-18 1985-01-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Sheet delivery device on printing machines
DE3007249A1 (en) * 1980-02-27 1981-09-03 Mabeg Maschinenbau Gmbh Nachf. Hense & Pleines Gmbh & Co, 6050 Offenbach Sheet feed table for processing machine - has rotating rollers with radial vacuum ducts projecting from below through openings in table surface for sheet conveying
DE3437584A1 (en) * 1984-10-13 1986-04-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg BOW DISPLAY DEVICE ON PRINTING MACHINES
DE4221927C2 (en) * 1992-07-03 2000-12-21 Heidelberger Druckmasch Ag Sheet delivery on a printing press

Also Published As

Publication number Publication date
ATE158559T1 (en) 1997-10-15
DE59500707D1 (en) 1997-10-30
EP0693449A2 (en) 1996-01-24
EP0693449A3 (en) 1997-01-15

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